SDM.py 文件源码

def isNear(self, address):

        difference = 0
        # a logically anded array ([true, false, ..]) multiplied by an integer is promoted to an int array.
        # Which then can be sent to packbits, that here returns an array of 1 element, so now z is an integer
        z = np.packbits(np.logical_and(self.address, address)*1)[0]
        while z:
            difference += 1
            z &= z-1 # magic!
        return 1 if difference < self.radius else 0